Ratchet-type torque wrench

A torque wrench is configured such that power supplied from an air motor (110) is transmitted to a ratchet unit (221) via a reduction gear unit (210) in order to rotate a spindle (60) connected to the ratchet unit. The torque wrench includes a ratchet housing (10) accommodating the ratchet unit, a b...

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Bibliographic Details
Main Author IZUMISAWA, NOBUYUKI
Format Patent
LanguageEnglish
French
German
Published 20.12.2006
Subjects
HAND TOOLS
MANIPULATORS
PERFORMING OPERATIONS
PORTABLE POWER-DRIVEN TOOLS
TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FORFASTENING, CONNECTING, DISENGAGING OR HOLDING
TRANSPORTING
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Summary:A torque wrench is configured such that power supplied from an air motor (110) is transmitted to a ratchet unit (221) via a reduction gear unit (210) in order to rotate a spindle (60) connected to the ratchet unit. The torque wrench includes a ratchet housing (10) accommodating the ratchet unit, a body (20) coupled with the ratchet housing and accommodating the air motor, a strain gage (11) bonded to the ratchet housing, a battery box (40) accommodated within the body, and a circuit board (30) fixed to a housing cover (31) covering the ratchet housing and having a torque adjustment circuit provided thereon. The circuit board is connected to the battery box via a conductive wire (42) running though a wiring groove formed on the body. Leads of the strain gage are connected to the circuit board within the housing cover.
Bibliography:Application Number: EP20060011352